Several passenger plane crashes have occurred worldwide this year, including a Wednesday morning Azerbaijan Airlines wreck that has left dozens feared dead.

The deadliest accident in aviation history occurred in 1977, when two Boeing 747 jumbo jets collided on a foggy runway on the Spanish island of Tenerife, killing 583 of the 644 people on board the planes. Spanish investigators blamed the captain of the KLM 747 for taking off without clearance from air traffic controllers.

All 179 victims who died in Jeju Air plane crash have been identified, authorities confirmed. Families will be taken to the site Wednesday to pay their respects.

Moments before the crash of Jeju Air flight 2216, a passenger aboard texted a friend that the Boeing 737-800 aircraft had struck a bird.

Former NTSB investigator Alan Diehl joins 'Fox & Friends' to weigh in as the U.S. and South Korea probe the crash that killed 179 people. Graphic Content Warning